This is a rate*unit problem.
So, 4 calories per pound x 151 pounds

He will burn 604 calories in one hour
 
        
             
        
        
        
Given 2.50x + 3.50y < 30.
Where x represent the number of hamburgers and y represent the number of cheeseburgers. 
Now question is to find the maximum value of hamburgers Ben could have sold when he has sold 4 cheeseburgers.
So, first step is to plug in y=4 in the given inequality. So,
2.50x+3.50(4)<30
2.50x+14 <30
2.50x<30- 14 Subtracting 14 from each sides.
2.50x< 16
 Dividing each sides by 2.50.
 Dividing each sides by 2.50.
x<6.4
Now x being number of hamburgers must be an integer , so tha maximum value of x can be 6, 
thus x = 6 hamburgers 
So, the maximum value of hamburgers Ben could have sold is 6*2.5=$15
Hope this helps!!
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Hello!
The objective of the veterinarian is to check if racing contributes to lameness in racing horses. To conduct a test the veterinarian should select at random two groups of horses, group one will be of racing horses and group two should be of not racing horses. Other than racing, all the other differences between the horses that may cause lame or resistance to lame should be controlled( confounding variables) such as age, breed, the number of weakly hours spent exercising, diet, obstacle-free environment, etc...
This type of study is an experimental design. 
The experimental design is an analytic essay characterized by the fact that the investigator controls the study variable and the randomization of the samples. In which all the variables are controlled except the ones that you wish to study.
 
I hope it helps!
 
        
             
        
        
        
Answer:
20
Step-by-step explanation:
25*4 equals 100  so 80/4 is 20.
 
        
                    
             
        
        
        
Answer:
D
Step-by-step explanation:
To be a solution, the number must be less than -8. This means it is located to the left of -8 on the number line.
Only -10 is to the left of -8 and less than it.